The idea of distributed data is an old concept that lived in white papers and PhD theses more than in the real world. I remember talking about distributed data in my database design college class back in the late 80s, with the belief that it would likely show up the next year. It never did.
The idea has been consistent throughout the years: No matter where we store data, by using a common set of services or data management control plane, we’re able to deal with it all, no matter where it physically exists, as one logical grouping of data. This data is available at any time, by anybody, for any purpose. It’s federated, democratized, and it’s completely transparent as to how this magic occurs across clouds, edge computers, devices, and legacy systems.